JP3095924B2 - Roller bearing - Google Patents
Roller bearingInfo
- Publication number
- JP3095924B2 JP3095924B2 JP05019992A JP1999293A JP3095924B2 JP 3095924 B2 JP3095924 B2 JP 3095924B2 JP 05019992 A JP05019992 A JP 05019992A JP 1999293 A JP1999293 A JP 1999293A JP 3095924 B2 JP3095924 B2 JP 3095924B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- side wall
- outer ring
- wall
- roller bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Rolling Contact Bearings (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、小型のローラベアリン
グの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small roller bearing.
【０００２】[0002]
【従来の技術】図６は、小型のローラベアリングＡの縦
断面図であり、合成樹脂製のベリングケースは、外輪１
と内輪２により構成され（或いは図７のように外輪１の
みの場合もある）、外輪１は、外側外輪３と内側外輪４
により構成される。2. Description of the Related Art FIG. 6 is a longitudinal sectional view of a small-sized roller bearing A.
And the inner ring 2 (or in some cases, only the outer ring 1 as shown in FIG. 7). The outer ring 1 includes an outer outer ring 3 and an inner outer ring 4.
It consists of.
【０００３】外側外輪３は、筒状の周壁８の一端（図６
において左端）に、内方に向けて直角に突出する環状の
第１側壁９が延設され、周壁８の他端には大径内周面１
０が形成され、大径内周面１に環状凹溝１１が周設され
る。周壁８のほぼ中央の内周面には、大径内周面１０に
接続する中間内周面１２が形成される。The outer ring 3 is connected to one end of a cylindrical peripheral wall 8 (FIG. 6).
At the left end), an annular first side wall 9 projecting inward at a right angle extends inward, and the other end of the peripheral wall 8 has a large-diameter inner peripheral surface 1.
0 is formed, and an annular concave groove 11 is provided around the large-diameter inner peripheral surface 1. An intermediate inner peripheral surface 12 that is connected to the large-diameter inner peripheral surface 10 is formed on the inner peripheral surface substantially at the center of the peripheral wall 8.
【０００４】内側外輪３は、大径内周面１０に挿入され
る嵌合周壁１３の外周面に環状突起１４が周設され、嵌
合周壁１３の他端（図６において右端）に、内方に向け
て直角に突出する環状の第２側壁１５が延設される。第
２側壁１５と第１側壁９との間にはローラ収容室５が形
成され、中間内周面１２にリテーナ６のフランジ部６ａ
が挿入されたとき、リテーナ６に中間部を支承された複
数個のローラ７がローラ収容室５に収容される。The inner outer race 3 has an annular projection 14 provided on the outer peripheral surface of a fitting peripheral wall 13 inserted into the large-diameter inner peripheral surface 10, and has an inner end provided at the other end (the right end in FIG. 6) of the fitting peripheral wall 13. An annular second side wall 15 that protrudes at right angles toward the other extends. The roller housing 5 is formed between the second side wall 15 and the first side wall 9, and the flange portion 6 a of the retainer 6 is formed on the intermediate inner peripheral surface 12.
Is inserted, the plurality of rollers 7 whose intermediate portions are supported by the retainer 6 are housed in the roller housing chamber 5.
【０００５】リテーナ６のフランジ部６ａを中間内周面
１２に収容し、内側外輪３を外側外輪２の大径内周面１
に挿入したときに、環状突起１４が環状凹溝１１に係入
するので、内側外輪３が外側外輪２に嵌着され、一体的
な外輪２となる。外輪１の外周面には、回転体の内周面
が嵌着され、内輪２には固定軸Ｓが嵌着される。[0005] The flange portion 6 a of the retainer 6 is accommodated in the intermediate inner peripheral surface 12, and the inner outer ring 3 is connected to the large-diameter inner peripheral surface 1 of the outer outer ring 2.
When inserted into the outer ring 2, the annular projection 14 engages with the annular groove 11, so that the inner outer ring 3 is fitted to the outer outer ring 2 to form an integral outer ring 2. The outer peripheral surface of the outer race 1 is fitted with the inner peripheral surface of the rotating body, and the inner race 2 is fitted with the fixed shaft S.
【０００６】図７は、内輪２のない型式のローラベアリ
ングＡ1 の縦断面図であり、この場合には、ローラ７が
固定軸Ｓに接触しながら固定軸Ｓの周囲を転動する。ロ
ーラベアリングＡ1 を回転体であるローラＲに嵌着する
場合には、外側外輪３の外周面に係合突起３ａ，ストッ
パ３ｂが設けられる。FIG. 7 is a longitudinal sectional view of a roller bearing A 1 without the inner ring 2. In this case, the roller 7 rolls around the fixed shaft S while being in contact with the fixed shaft S. When fitting the roller bearings A 1 to a rotating body roller R, the engaging projections 3a, the stopper 3b is provided on the outer peripheral surface of the outer outer ring 3.
【０００７】[0007]
【発明が解決しようとする課題】ローラ７がローラ収容
室５内で円滑に回転するために、ローラ７の両端面と、
第１側壁９，第２側壁１５の内壁面との間に、僅かな隙
間が設けられているが、コンベアローラＲにスラスト荷
重が加わった場合には、ローラ７の端面が、第１側壁９
或いは第２側壁１５の内壁面に押しつけられ、ローラ７
の端面が回転摩擦力を受けて回転が不円滑になる問題が
ある。In order for the roller 7 to rotate smoothly in the roller accommodating chamber 5, both ends of the roller 7 are
Although a small gap is provided between the first side wall 9 and the inner wall surface of the second side wall 15, when a thrust load is applied to the conveyor roller R, the end face of the roller 7 is
Alternatively, the roller 7 is pressed against the inner wall surface of the second side wall 15 and
There is a problem that rotation is not smooth due to the rotational frictional force applied to the end face of the rim.
【０００８】又、ローラベアリングＡ或いはＡ1 が回転
しているときに、外輪１にスラスト荷重やラジアル荷重
が加わり、更に、ローラ７の回転摩擦力が加わるので、
第１側壁９の内壁隅部、或いは、第２側壁１５の内壁隅
部にクラックＣが発生する問題があった（図８では第２
側壁１５の内壁隅部に発生するクラックＣのみを示
す）。Further, when the roller bearing A or A 1 is rotating, a thrust load or a radial load is applied to the outer ring 1 and further a rotational friction force of the roller 7 is applied.
There was a problem that a crack C was generated at the inner wall corner of the first side wall 9 or the inner wall corner of the second side wall 15 (the second wall in FIG. 8).
Only the crack C generated at the corner of the inner wall of the side wall 15 is shown).
【０００９】図９は別の型式のローラベアリングＡ2 の
縦断面図であり、内輪２の端部には内輪２の外周面から
直角に突出する鍔部１６が周設され、鍔部１６と第２側
壁１５との間に、ローラ収容室５が設けられる。この型
式のローラベアリングＡ2 では、鍔部１６の内壁隅部に
もクラックＣが発生する問題が生じる。本発明はかかる
課題を解決することを目的とし、ローラ端面と外輪或い
は内輪との間に生じる回転摩擦力を最小限に軽減すると
共に、クラックＣの発生を防止するローラベアリングを
提供するものである。[0009] Figure 9 is a longitudinal sectional view of the roller bearing A 2 of another type, the flange portion 16 projecting perpendicularly from the outer circumferential surface of the inner ring 2 is circumferentially at the end portion of the inner ring 2, the flange portion 16 The roller housing chamber 5 is provided between the roller housing chamber 5 and the second side wall 15. In this type of roller bearing A 2 , there is a problem that a crack C is generated at the corner of the inner wall of the flange 16. SUMMARY OF THE INVENTION An object of the present invention is to provide a roller bearing that minimizes the rotational frictional force generated between a roller end face and an outer ring or an inner ring and prevents cracks C from occurring. .
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、筒状の周壁の一端に内方に向けて直角に
突出する環状の第１側壁が延設される外側外輪と、上記
周壁の内周面に嵌着される嵌合周壁の他端に内方に向け
て直角に突出する環状の第２側壁が延設される内側外輪
とにより、上記両側壁の間にローラ収容室を形成する外
輪を構成し、上記ローラ収容室に回転可能に収容される
複数のローラが固定軸の周囲を転動するローラベアリン
グにおいて、上記ローラの両端面に、該両端面の中央部
より突出する突起を設け、上記第１側壁の内側隅部及び
上記第２側壁の内側隅部に、凹状の曲面を有する補強部
を設ける。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an outer outer ring having an annular first side wall protruding at right angles inward at one end of a cylindrical peripheral wall. A roller extending between the two side walls by an inner outer ring having an annular second side wall protruding inward at a right angle extending inward at the other end of the fitting peripheral wall fitted to the inner peripheral surface of the peripheral wall. In a roller bearing that forms an outer ring that forms a housing chamber and a plurality of rollers that are rotatably housed in the roller housing chamber roll around a fixed shaft, both ends of the roller have a central portion between the two ends. Protrusions that protrude more are provided, and reinforcing portions having concave curved surfaces are provided at inner corners of the first side wall and inner corners of the second side wall.
【００１１】或いは、筒状の周壁の一端に内方に向けて
直角に突出する環状の第１側壁が延設される外側外輪
と、上記周壁の内周面に嵌着される嵌合周壁の他端に内
方に向けて直角に突出する環状の第２側壁が延設される
内側外輪とにより外輪を構成し、筒状に形成され内周面
に固定軸が嵌着される内輪の外周面に直角に突出する鍔
部を周設し、該鍔部と上記両側壁のうちの一方の側壁と
の間にローラ収容室を形成し、該ローラ収容室に複数の
ローラを回転可能に収容するローラベアリングにおい
て、上記ローラの両端面に、該両端面の中央部より突出
する突起を設け、上記鍔部の内側隅部及び上記一方の側
壁の内側隅部に、凹状の曲面を有する補強部を設ける。[0011] Alternatively, an outer outer ring in which an annular first side wall protruding inward at right angles is extended from one end of the cylindrical peripheral wall, and a fitting peripheral wall fitted to the inner peripheral surface of the peripheral wall. An outer ring is formed by an inner outer ring having an annular second side wall protruding inward at a right angle at the other end, and an outer ring is formed. The outer ring is formed in a cylindrical shape and has a fixed shaft fitted to an inner circumferential surface. A flange portion projecting at right angles to the surface is provided around, a roller accommodating chamber is formed between the flange portion and one of the side walls, and a plurality of rollers are rotatably accommodated in the roller accommodating chamber. In the roller bearing, a protrusion protruding from a center portion of the both end surfaces is provided on both end surfaces of the roller, and a reinforcing portion having a concave curved surface at an inner corner of the flange and an inner corner of the one side wall. Is provided.
【００１２】[0012]
【作用】上記のように構成されたローラベアリングは、
ローラの両端面の中央部に突起を設けたので、突起の先
端は、ローラの回転中心であるローラ軸心にほぼ一致す
る。従って、回転中のローラは、回転速度がほとんどゼ
ロである突起の先端のみが第１側壁，第２側壁或いは内
輪の鍔部に当接するので、ローラ端面と外輪の両側壁或
いは内輪の鍔部との間に生じる回転摩擦力が最小限とな
り、ローラが円滑に回転する。The roller bearing constructed as described above is
Since the projection is provided at the center of both end surfaces of the roller, the tip of the projection substantially coincides with the roller axis which is the rotation center of the roller. Therefore, in the rotating roller, only the tip of the protrusion having a rotation speed of almost zero abuts on the first side wall, the second side wall, or the flange of the inner ring. The frictional force generated between the rollers is minimized, and the rollers rotate smoothly.
【００１３】ローラの両端面の中央部に突起を設けたの
で、ローラの端面は中央部分のみが突出している。従っ
て、第１側壁の内壁面の隅部及び第２側壁の内壁面の隅
部、或いは、外輪の両側壁のうちの一方の内壁面の隅部
及び内輪の鍔部の隅部に、補強部を設けるスペースが形
成され、この隅部に補強部を設けることによりクラック
の発生が防止される。Since the protrusion is provided at the center of both end surfaces of the roller, only the center portion of the end surface of the roller protrudes. Therefore, the reinforcing portion is provided at the corner of the inner wall surface of the first side wall and the corner of the inner wall surface of the second side wall, or at the corner of one inner wall surface and the corner of the flange portion of the inner ring of both side walls of the outer ring. Is formed, and a crack is prevented from being generated by providing a reinforcing portion at this corner.
【００１４】[0014]
【実施例】本発明の実施例について図面を参照して説明
する。なお、従来例と同一部品については同一符号を付
してその詳細説明を省略する。図１は、図６の従来例の
ローラベアリングＡに本発明を実施した第１実施例を示
すローラベアリングＢの縦断面図であり、外輪１は、第
１側壁９を有する外側外輪３と、第２側壁１５を有する
内側外輪４とにより構成され、第１側壁９と第２側壁１
５との間には、外輪１と内輪２に囲まれたローラ収容室
５が形成されることは従来例と同様である。Embodiments of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted. FIG. 1 is a longitudinal sectional view of a roller bearing B showing a first embodiment of the present invention in which the present invention is applied to the conventional roller bearing A of FIG. 6, wherein the outer ring 1 includes an outer outer ring 3 having a first side wall 9; The first side wall 9 and the second side wall 1 are constituted by the inner outer ring 4 having the second side wall 15.
5, a roller housing chamber 5 surrounded by the outer ring 1 and the inner ring 2 is formed as in the conventional example.
【００１５】然し、本発明では、リテーナ６に回動可能
に支承されたローラ１７の両端面には、両端面の中央部
より突出する突起２０が設けられる。突起２０の表面は
ほぼ球面状に形成され、その先端部が第１側壁９或いは
第２側壁１５にゆるやかに点接触する。従って、第１側
壁９或いは第２側壁を傷付ける虞がなく、その接触点
は、ローラ１７の回転中心の軸線とほぼ一致する。ロー
ラ１７の回転中心は、回転速度がゼロであり、突起２０
の先端が第１側壁９或いは第２側壁１５に接触しても、
回転摩擦力は最小限になる。However, in the present invention, the projections 20 projecting from the center of both end faces are provided on both end faces of the roller 17 rotatably supported by the retainer 6. The surface of the projection 20 is formed in a substantially spherical shape, and the tip end thereof comes into point contact with the first side wall 9 or the second side wall 15 gently. Therefore, there is no risk of damaging the first side wall 9 or the second side wall, and the contact point substantially coincides with the axis of the rotation center of the roller 17. The rotation center of the roller 17 has a rotation speed of zero,
Even if the tip of contacts the first side wall 9 or the second side wall 15,
Rotational friction is minimized.
【００１６】ローラ１７の端面は、中央の突起２０のみ
が突出しているので、ローラ１７の端面の周縁部１７ａ
と、第１側壁９或いは第２側壁との間には、少なくとも
突起２０の高さｈの隙間が形成されので（図２参照）、
第１側壁９の内壁面の隅部、及び、第２側壁１５の隅部
には、ローラ１７と干渉しない補強部２１を設けること
ができる。Since only the central projection 20 protrudes from the end surface of the roller 17, the peripheral portion 17a of the end surface of the roller 17 is formed.
A gap of at least the height h of the projection 20 is formed between the first side wall 9 and the second side wall 9 (see FIG. 2).
Reinforcing portions 21 that do not interfere with the roller 17 can be provided at the corners of the inner wall surface of the first side wall 9 and the corners of the second side wall 15.
【００１７】補強部２１は、従来のローラベアリングＡ
に生じるクラックＣの発生を防止するものであり、周壁
８の内周面と第１側壁９の内面とに接続する凹状の曲
面、及び、嵌合周壁１３の内周面と第２側壁１５の内面
とに接続する凹状の曲面を有する（図２参照）。補強部
２１の横方向の長さａ1 は突起２０の高さｈよりも短い
ので、ローラ１７の端面の周縁部１７ａに干渉しない。
又、補強部２１の縦方向の長さａ2 は、突起２０に当た
らない範囲の長さとする。The reinforcing portion 21 is made of a conventional roller bearing A.
And a concave curved surface connected to the inner peripheral surface of the peripheral wall 8 and the inner surface of the first side wall 9 and the inner peripheral surface of the fitting peripheral wall 13 and the second side wall 15. It has a concave curved surface connected to the inner surface (see FIG. 2). Since the lateral length a 1 of the reinforcing portion 21 is shorter than the height h of the protrusion 20, the reinforcing portion 21 does not interfere with the peripheral edge portion 17 a of the end face of the roller 17.
The length a 2 of the reinforcing portion 21 in the vertical direction is set to a length that does not hit the protrusion 20.
【００１８】次に、上記のように構成されたローラベア
リングＢの作用を説明すると、ローラ１７の両端面に設
けられた突起２０の先端は、ローラ１７の回転中心とほ
ぼ一致するので、ローラ１７が回転しているとき、突起
２０の先端の回転速度はほとんどゼロである。ローラベ
アリングＢの外輪１が回転するときに、ローラ１７の突
起２０のみが第１側壁９或いは第２側壁１５に当たるの
で、回転摩擦力は極めて小さくなり、ローラ１７が極め
て円滑に回転する。Next, the operation of the roller bearing B constructed as described above will be described. The tips of the projections 20 provided on both end faces of the roller 17 substantially coincide with the rotation center of the roller 17. Is rotating, the rotation speed of the tip of the projection 20 is almost zero. When the outer ring 1 of the roller bearing B rotates, only the protrusion 20 of the roller 17 comes into contact with the first side wall 9 or the second side wall 15, so that the rotational frictional force is extremely small, and the roller 17 rotates extremely smoothly.
【００１９】ローラベアリングＢにスラスト荷重やラジ
アル荷重がかかっても、第１側壁９及び第２側壁１５の
隅部は補強部２１によって補強されているので、従来の
ローラベアリングＡのようにクラックＣが発生する虞は
ない。Even if a thrust load or a radial load is applied to the roller bearing B, the corners of the first side wall 9 and the second side wall 15 are reinforced by the reinforcing portions 21. Does not occur.
【００２０】図３は本考案の第２実施例を示すローラベ
アリングＢ1 の縦断面図であり、図９に示す従来例のよ
うに、内輪２の端部には、内輪２の外周面から直角に突
出する鍔部１６が設けられ、鍔部１６と第２側壁１５と
の間にローラ収容室５が形成されることは図９の従来例
と同様であるが、ローラ収容室５には、両端面に突起２
０が形成されるローラ１７が収容される。[0020] Figure 3 is a longitudinal sectional view of the roller bearings B 1 showing a second embodiment of the present invention, as in the conventional example shown in FIG. 9, the end portion of the inner ring 2, the outer peripheral surface of the inner ring 2 A flange 16 projecting at a right angle is provided, and the roller housing 5 is formed between the flange 16 and the second side wall 15 as in the conventional example of FIG. , Protrusions on both end faces
The roller 17 where 0 is formed is housed.
【００２１】この突起２０の形状は第１実施例と同様で
あり、ローラ１７の両端面と、鍔部１６及び第２側壁１
５との間にそれぞれ隙間ｈが形成されるので、鍔部１６
の内壁面の隅部及び第２側壁１５の内壁面の隅部に、第
１実施例と同様の補強部２１を設けることができる。従
って、第１実施例と同様に、ローラ１７が極めて小さな
摩擦力で回転する効果と、鍔部１６及び第２側壁１５に
クラックＣが発生しない効果を生じる。The shape of the projection 20 is the same as that of the first embodiment, and the both ends of the roller 17 and the flange 16 and the second side wall 1 are formed.
5, a gap h is formed between the flange 16
Reinforcing portions 21 similar to those in the first embodiment can be provided at the corners of the inner wall surface of the second embodiment and the inner wall surface of the second side wall 15. Therefore, similarly to the first embodiment, the effect that the roller 17 rotates with an extremely small frictional force and the effect that the crack C does not occur on the flange 16 and the second side wall 15 are obtained.
【００２２】図３は、ローラベアリングＢ1 がローラＲ
1 に嵌着される実施例を示し、ローラベアリングＢ1 の
外側外輪３の周壁８の外周面の右側に***部１８が周設
され（図３参照）、***部１８の左端部には円周方向の
複数箇所に刻設されたスリット（図示しない）により複
数の可撓片１９が形成され、***部１８の右端にストッ
パ２２が周設され、***部１８と可撓片１９との間に僅
かに低くなった嵌合外周面２３が形成される。FIG. 3 shows that the roller bearing B 1 is a roller R
Shows an embodiment which is fitted into a raised portion 18 is circumferentially provided on the right side of the outer peripheral surface of the peripheral wall 8 of the outer outer ring 3 of the roller bearings B 1 (see FIG. 3), the circle at the left end of the raised portion 18 A plurality of flexible pieces 19 are formed by slits (not shown) engraved at a plurality of locations in the circumferential direction, and a stopper 22 is provided around the right end of the raised portion 18 so that a gap between the raised portion 18 and the flexible piece 19 is formed. A slightly lower fitting outer peripheral surface 23 is formed.
【００２３】そして、ローラＲ1 の両端部に、内方に屈
曲する係合部２４が設けられ、ローラベアリングＢ1 を
ローラＲ1 の端部に嵌入すると、係合部２４に当接した
可撓片１９が内側に撓み、係合部２４が可撓片１９を通
過すると、可撓片１９の弾性変形が旧形状に復帰し、ス
トッパ２２に当たった係合部２４が嵌合外周面２３に保
持される。At both ends of the roller R 1 , engagement portions 24 that are bent inward are provided, and when the roller bearing B 1 is fitted into the end of the roller R 1 , the engagement with the engagement portion 24 is possible. When the flexible piece 19 bends inward and the engaging portion 24 passes through the flexible piece 19, the elastic deformation of the flexible piece 19 returns to the old shape, and the engaging portion 24 hitting the stopper 22 becomes the fitting outer peripheral surface 23. Is held.
【００２４】図４，図５は、モータ駆動型式のローラベ
アリングＢ2 であり、第２側壁１５と鍔部１６との間に
挿入されるローラ１７の両端面に突起２０が形成され、
第２側壁１５の内壁面の隅部，鍔部１６に補強部２１が
設けられることは、ローラベアリングＢ1 と同様である
が、ローラＲ2 との嵌合構造が異なるため、外側外輪２
５，２６の形状が相違する。FIG. 4, FIG. 5 is a roller bearing B 2 of motor drive type, the projections 20 are formed on both end surfaces of the roller 17 which is inserted between the second side wall 15 and the flange portion 16,
Corners of the inner wall surface of the second side wall 15, the reinforcing portion 21 to the flange portion 16 is provided is the same as the roller bearings B 1, since the fitting structure of the roller R 2 are different, the outer outer ring 2
5 and 26 have different shapes.
【００２５】図５において右側の外側外輪２５は、周壁
８の外側端部（ローラＲ2 の両端部に挿入されたときに
外側となる端部）より突出する起立壁２７が周設され、
起立壁２７の端部より内側に延びる嵌合周壁２８の外周
面に環状凸条２９が周設され（図５参照）、嵌合周壁２
８の円周方向の複数箇所に、嵌合周壁２８の軸方向に延
びる凹溝３０が設けられ、各凹溝３０に設けられるスリ
ット３１により、嵌合可撓片３２が形成される。一方、
周壁８に突設されるリブ３３の先端が各嵌合可撓片３２
に近接する（図４参照）。FIG. 5 right outside the outer ring 25 in the upright wall 27 projecting from (end to be outside when inserted into both ends of the roller R 2) are circumferentially outer end of the peripheral wall 8,
An annular ridge 29 is provided around the outer peripheral surface of the fitting peripheral wall 28 extending inward from the end of the upright wall 27 (see FIG. 5).
A plurality of concave grooves 30 extending in the axial direction of the fitting peripheral wall 28 are provided at a plurality of positions in the circumferential direction of 8, and the fitting flexible pieces 32 are formed by the slits 31 provided in each of the concave grooves 30. on the other hand,
The distal end of the rib 33 protruding from the peripheral wall 8 is
(See FIG. 4).
【００２６】図５において左側の外側外輪２６は、右側
の外側外輪２５と対称形に形成されるが、起立壁２７よ
り下方に延びる環状側壁３４の下端部に連結筒部３５が
設けられ、連結筒部３５にスプロケット３６が設けられ
る点が右側の外側外輪２５と相違する。In FIG. 5, the left outer ring 26 is formed symmetrically with the right outer ring 25, but a connecting cylindrical portion 35 is provided at the lower end of an annular side wall 34 extending below the upright wall 27. The point that the sprocket 36 is provided in the cylindrical portion 35 is different from the right outer ring 25.
【００２７】スプロケット３６には、モータの回転力を
伝達する無端チェン（図示しない）が巻回される。ロー
ラＲ2 の両端部の内周面には、外側外輪２５，２６が嵌
入したときに凹溝３０に嵌合する凸条３７（図４参照）
と、環状凸条２９に嵌合する環状凹溝３８が設けられ
る。An endless chain (not shown) for transmitting the rotational force of the motor is wound around the sprocket 36. The inner peripheral surface of both ends of the roller R 2, ridge 37 which fits into the groove 30 when the outer outer ring 25 is fitted (see FIG. 4)
, An annular groove 38 fitted into the annular ridge 29 is provided.
【００２８】そして、ローラＲ2 の両端部にローラベア
リングＢ2 を挿入すると、ローラＲ 2 の内面の凸条３７
が凹溝３０内を摺動し、ローラＲ2 の端部に当たった嵌
合可撓片３２が弾性変形し、嵌合周壁２８の直径が縮小
する。このとき、リブ３３の先端が嵌合可撓片３２の弾
性変形を制限する。更に、ローラベアリングＢ2 を挿入
すると、、ローラＲ2 の端部が嵌合周壁２８の端部に設
けられたストッパ３９に当接すると共に、ローラＲ2 の
環状凹溝３８に環状凸条２９が嵌合する。従って、ロー
ラベアリングＢ2 は、ローラＲ2 内に軸方向に移動不
能、且つ、回動不能に嵌着される。Then, the roller RTwoRoller bear at both ends of
Ring BTwoIs inserted, the roller R TwoRidge 37 on the inner surface of
Slides in the groove 30, and the roller RTwoFit at the end of
The flexible piece 32 is elastically deformed, and the diameter of the fitting peripheral wall 28 is reduced.
I do. At this time, the tip of the rib 33 is
Limit sexual transformation. Furthermore, roller bearing BTwoInsert
Then, the roller RTwoAt the end of the fitting peripheral wall 28.
The roller RTwoof
The annular ridge 29 is fitted in the annular groove 38. Therefore, low
Bearing BTwoIs the roller RTwoIn the axial direction
It is fitted so that it cannot rotate and cannot rotate.
【００２９】モータの回転がチェンを介してスプロケッ
ト３６に伝達されると、外側外輪２６が回転し、外側外
輪２６の回転はローラＲ2 及び外側外輪２５に伝達さ
れ、ローラベアリングＢ2 がローラＲ2 と一体となって
回転する。このとき、ローラベアリングＢ2 のローラ１
７の両端面に突起２０が設けられているので、ローラ１
７が円滑に回転する。又、内輪２の鍔部１６の内壁面の
隅部，内側外輪４の第２側壁１５の内壁面の隅部に補強
部２１が設けられているので、クラックＣが発生する虞
はない。[0029] When the rotation of the motor is transmitted to the sprocket 36 via the chain, rotates outside the outer ring 26, the rotation of the outer outer ring 26 is transmitted to the roller R 2 and the outer outer ring 25, roller bearings B 2 the roller R It rotates together with 2 . At this time, the roller 1 of the roller bearing B 2
7 are provided with projections 20 on both end surfaces thereof,
7 rotates smoothly. Further, since the reinforcing portions 21 are provided at the corners of the inner wall surface of the flange 16 of the inner ring 2 and the corners of the inner wall surface of the second side wall 15 of the inner outer ring 4, there is no possibility that cracks C are generated.
【００３０】[0030]
【発明の効果】本発明は以上のように構成されているの
で、以下に記載されるような効果を奏する。 (1) ローラの両端面の中央に突起が設けられているの
で、ローラの回転摩擦力が最小限になり、ローラが円滑
に回転する効果を生じる。 (2) ローラの両端面に設けた突起により、外輪の側壁の
内壁面の隅部、或いは内輪の鍔部の内壁面の隅部に補強
部を設けるスペースが生じ、補強部を設けることによ
り、ローラベアリングのケースの機械的強度が増大し、
ケースにクラックが発生しなくなった。Since the present invention is configured as described above, the following effects can be obtained. (1) Since the protrusions are provided at the center of both end surfaces of the roller, the rotational frictional force of the roller is minimized, and the effect that the roller rotates smoothly is produced. (2) By the projections provided on both end surfaces of the roller, a space is provided for providing a reinforcing portion at the corner of the inner wall surface of the side wall of the outer ring, or at the corner of the inner wall surface of the flange portion of the inner ring, and by providing the reinforcing portion, The mechanical strength of the roller bearing case increases,
The case no longer cracks.
【図１】本発明の第１実施例を示すローラベアリングの
縦断面図である。FIG. 1 is a longitudinal sectional view of a roller bearing showing a first embodiment of the present invention.
【図２】図１の要部拡大図である。FIG. 2 is an enlarged view of a main part of FIG.
【図３】本発明の第２実施例を示すローラベアリングの
縦断面図である。FIG. 3 is a longitudinal sectional view of a roller bearing showing a second embodiment of the present invention.
【図４】本発明の第２実施例を示す他の型式のローラベ
アリングの軸直角方向の断面図である。FIG. 4 is a cross-sectional view in a direction perpendicular to the axis of another type of roller bearing showing a second embodiment of the present invention.
【図５】図４のＸ−Ｘ断面図である。FIG. 5 is a sectional view taken along line XX of FIG. 4;
【図６】従来のローラベアリングの縦断面図である。FIG. 6 is a longitudinal sectional view of a conventional roller bearing.
【図７】従来の他の型式のローラベアリングの縦断面図
である。FIG. 7 is a longitudinal sectional view of another type of conventional roller bearing.
【図８】従来のローラベアリングに発生するクラックを
説明する略図である。FIG. 8 is a schematic diagram illustrating cracks generated in a conventional roller bearing.
【図９】従来の更に異なる型式のローラベアリングの縦
断面図である。FIG. 9 is a longitudinal sectional view of a different type of conventional roller bearing.
Ａ，Ａ1 ローラベアリング Ｂ，Ｂ1 ，Ｂ2 ローラベアリング Ｒ，Ｒ1 ，Ｒ2 ローラ １ 外輪 ２ 内輪 ３ 外側外輪 ４ 内側外輪 ５ ローラ収容室 ７，１７ ローラ １７ａ 周縁部 ８ 周壁 ９ 第１側壁 １３ 環状周壁 １５ 第２側壁 １６ 鍔部 ２０ 突起 ２１ 補強部 ２２ ストッパ ２４ 係合部 ２５，２６ 外側外輪 ３６ スプロケットA, A 1 Roller bearing B, B 1 , B 2 Roller bearing R, R 1 , R 2 Roller 1 Outer ring 2 Inner ring 3 Outer outer ring 4 Inner outer ring 5 Roller storage chamber 7, 17 Roller 17a Peripheral edge 8 Peripheral wall 9 First side wall DESCRIPTION OF SYMBOLS 13 Annular peripheral wall 15 2nd side wall 16 Flange part 20 Projection 21 Reinforcement part 22 Stopper 24 Engagement part 25, 26 Outer outer ring 36 Sprocket
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F16C 19/52 F16C 13/02 F16C 33/34 F16C 33/60 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) F16C 19/52 F16C 13/02 F16C 33/34 F16C 33/60
Claims (2)
突出する環状の第１側壁が延設される外側外輪と、上記
周壁の内周面に嵌着される嵌合周壁の他端に内方に向け
て直角に突出する環状の第２側壁が延設される内側外輪
とにより、上記両側壁の間にローラ収容室を形成する外
輪を構成し、上記ローラ収容室に回転可能に収容される
複数のローラが固定軸の周囲を転動するローラベアリン
グにおいて、 上記ローラの両端面に、該両端面の中央部より突出する
突起を設け、上記第１側壁の内側隅部及び上記第２側壁
の内側隅部に、凹状の曲面を有する補強部を設けること
を特徴とするローラベアリング。An outer outer ring having an annular first side wall extending inward at a right angle at one end of a cylindrical peripheral wall, and a fitting peripheral wall fitted to an inner peripheral surface of the peripheral wall. An outer ring forming a roller storage chamber between the two side walls is constituted by an inner outer ring having an annular second side wall protruding inward at a right angle at the other end, and is rotated by the roller storage chamber. In a roller bearing in which a plurality of rollers that can be accommodated roll around a fixed shaft, protrusions are provided on both end surfaces of the roller so as to protrude from a central portion of the both end surfaces, and an inner corner of the first side wall and A roller bearing, wherein a reinforcing portion having a concave curved surface is provided at an inner corner of the second side wall.
突出する環状の第１側壁が延設される外側外輪と、上記
周壁の内周面に嵌着される嵌合周壁の他端に内方に向け
て直角に突出する環状の第２側壁が延設される内側外輪
とにより外輪を構成し、筒状に形成され内周面に固定軸
が嵌着される内輪の外周面に直角に突出する鍔部を周設
し、該鍔部と上記両側壁のうちの一方の側壁との間にロ
ーラ収容室を形成し、該ローラ収容室に複数のローラを
回転可能に収容するローラベアリングにおいて、 上記ローラの両端面に、該両端面の中央部より突出する
突起を設け、上記鍔部の内側隅部及び上記一方の側壁の
内側隅部に、凹状の曲面を有する補強部を設けることを
特徴とするローラベアリング。2. An outer outer ring having an annular first side wall extending inward at a right angle at one end of a cylindrical peripheral wall, and a fitting peripheral wall fitted on an inner peripheral surface of the peripheral wall. An outer ring is formed by an inner outer ring having an annular second side wall protruding inward at a right angle at the other end, and an outer ring is formed. The outer ring is formed in a cylindrical shape and has a fixed shaft fitted to an inner circumferential surface. A flange portion projecting at right angles to the surface is provided around, a roller accommodating chamber is formed between the flange portion and one of the side walls, and a plurality of rollers are rotatably accommodated in the roller accommodating chamber. In the roller bearing, a protrusion protruding from a center portion of the both end surfaces is provided on both end surfaces of the roller, and a reinforcing portion having a concave curved surface at an inner corner of the flange portion and an inner corner of the one side wall. A roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05019992A JP3095924B2 (en) | 1993-02-08 | 1993-02-08 | Roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05019992A JP3095924B2 (en) | 1993-02-08 | 1993-02-08 | Roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06235418A JPH06235418A (en) | 1994-08-23 |
| JP3095924B2 true JP3095924B2 (en) | 2000-10-10 |
Family
ID=12014667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05019992A Expired - Lifetime JP3095924B2 (en) | 1993-02-08 | 1993-02-08 | Roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3095924B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010151244A (en) | 2008-12-25 | 2010-07-08 | Jtekt Corp | Roller bearing |
-
1993
- 1993-02-08 JP JP05019992A patent/JP3095924B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06235418A (en) | 1994-08-23 |
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